Patent US2819660A successfully refreshed from Google Patents.
US1273318A
Expired / Lapsed
US
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Machine for opening envelops.
Assignee: BIRCHER Co Inc
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Filing: 1912-02-02
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Granted: 1918-07-23
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Expires: 1932-02-02
Abstract
No abstract record available.
Inventors
- 👤 Eugene A Bircher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:43
CPC Classifications
B; B26; B26D; B26D5/00; Y; Y10; Y10S; Y10S83/00; Y10S83/912; Y10T; Y10T83/00; Y10T83/04; Y10T83/0405; Y10T83/647; Y10T83/6584; Y10T83/6592; Y10T83/768; Y10T83/7809; Y10T83/783
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1921-07-22 | 1922-01-21 | 1922-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1925-07-22 | 1926-01-21 | 1926-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1929-07-22 | 1930-01-21 | 1930-07-23 | $7700.00 | Window Closed / Lapsed |